Dear LLVM developers,
I am Shen, a PhD student in computer science in lehigh university. Now I am using LLVM to generate a Program Dependence Graph(PDG), and each node in my graph represent a statement(should be an Instruction in LLVM, i think).
Now I have generated a coarse PDG on BasicBlock level as shown in the following figure, using APIs such as
std::string getNodeLabel(const [BasicBlock](http://llvm.org/docs/doxygen/html/classllvm_1_1BasicBlock.html) *[Node](http://llvm.org/docs/doxygen/html/DominanceFrontierImpl_8h.html#adeb436e8060b57a35092e28f77eeb7d3), const [Function](http://llvm.org/docs/doxygen/html/classllvm_1_1Function.html) *Graph)
However, all APIs I found in class DOTGraphTraits ask “BasicBlock”, not Instruction for arguments. So if i want to generate a more fine-grained PDG on “Instruction” level, should i revise the llvm source code to add my new APIs, or use some built-in APIs i did’t know? Or, can i generate a basicblock for each instruction? Thank you!